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Reflection-Plane Tests of Spoilers on an Advanced Technology Wing
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English
Abstract
Tests of a finite-span wing with an advanced technology GA(W)-1 airfoil, spoilers, and 30% full-span Fowler flap have been conducted utilizing a reflection-plane model in the WSU low speed wind tunnel. Flap settings from 0° to 40° were tested with a series of 10% chord spoilers of various cross-sectional shapes. Wing force and spoiler hinge moment measurements were made, as well as tuft studies of stalling patterns.
Results show that a finite span (aspect ratio 9.5) CLmax value of 3.0 can be obtained with 40° flap at a Reynolds number of 1.0 x 106. Spoiler results correlate well with two-dimensional results, which show that satisfactory roll control can be obtained for all flap settings, with proper lower surface venting. Spoiler gap leak lift and drag penalties were found to be quite substantial, indicating a need for careful design of gaps and seals for flap and spoiler nested configurations.
Authors
Citation
Wentz, W., "Reflection-Plane Tests of Spoilers on an Advanced Technology Wing," SAE Technical Paper 760482, 1976, https://doi.org/10.4271/760482.Also In
References
- Wentz W. H. Seetharam H. C. “Development of a Fowler Flap System for a High Performance General Aviation Airfoil.” NASA CR-2443 1974
- Wentz W. H. “Effectiveness of Spoilers on the GA(W)-1 Airfoil with a High Performance Fowler Flap.” NASA CR-2538 1975
- Kohlman D. L. Holmes B. J. Crane H. L. “Preliminary Flight-Test Results of an Advanced Technology Light Twin-Engine Airplane.” SAE Paper 750525 1975
- Wentz W. H. Volk C. G. “Reflection Plane Tests of Spoilers on an Advanced Technology Wing with a Large Fowler Flap.” NASA CR- (In publication)
- Wenzinger C. J. Rogallo R. M. “Wind-Tunnel Investigation of Spoiler, Deflector and Slot Lateral-Control Devices on Wings with Full-Span Split and Slotted Flaps.” NACA Report 706 1941
- Kohlman D. L. Holmes B. J. Crane H. L. “Flight-Test Results of an Advanced Technology Light Twin-Engine Airplane.” SAE Paper (In publication) 1976